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Hidden features of NAD-RNA epitranscriptome in Drosophila life cycle

ABSTRACT: Hidden features of NAD-RNA epitranscriptome in Drosophila life cycle

PROVIDER: PRJNA950069 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24007900_1.fastq.gz	Fastqsanger.gz
	SRR24007900_2.fastq.gz	Fastqsanger.gz
	SRR24007901_1.fastq.gz	Fastqsanger.gz
	SRR24007901_2.fastq.gz	Fastqsanger.gz
	SRR24007902_1.fastq.gz	Fastqsanger.gz

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Hidden features of NAD-RNA epitranscriptome in Drosophila life cycle

Project description:Nicotinamide adenine dinucleotide (NAD), a nucleotide-containing metabolite, can be incorporated into the RNA 5’-terminus to result in NAD-capped RNA (NAD-RNA). Since NAD has been heightened as one of the most essential metabolites in cells, its attachment to RNA might indicate a yet-to-be discovered mechanism at the epitranscriptomic level. Here, we design a highly-sensitive method, DO-seq, to capture NAD-RNAs. Using Drosophila, we identify thousands of previously unexplored NAD-RNAs and their dynamics in the fly life cycle, from embryo to adult. We show the evidence that chromosomal clustering might be the structural basis by which co-expression can couple with NAD capping on physically and functionally-linked genes. Furthermore, we note that NAD capping of cuticle genes seems to inversely correlate with gene expression. Combined, we propose NAD-RNA epitranscriptome as a hidden layer of regulation that profoundly impacts biological processes. DO-seq empowers the identification of NAD-capped RNAs, facilitating functional investigation into this modification.

2023-12-21 | GSE228505 | GEO

Hidden features of NAD-RNA epitranscriptome in <i>Drosophila</i> life cycle.

Project description:Nicotinamide adenine dinucleotide (NAD), a nucleotide-containing metabolite, can be incorporated into the RNA 5'-terminus to result in NAD-capped RNA (NAD-RNA). Since NAD has been heightened as one of the most essential metabolites in cells, its linkage to RNA represents a critical but poorly studied modification at the epitranscriptomic level. Here, we design a highly sensitive method, DO-seq, to capture NAD-RNAs. Using Drosophila, we identify thousands of previously unexplored NAD-RNAs and their dynamics in the fly life cycle, from embryo to adult. We show the evidence that chromosomal clustering might be the structural basis by which co-expression can couple with NAD capping on physically and functionally linked genes. Furthermore, we note that NAD capping of cuticle genes inversely correlates with their gene expression. Combined, we propose NAD-RNA epitranscriptome as a hidden layer of regulation that underlies biological processes. DO-seq empowers the identification of NAD-capped RNAs, facilitating functional investigation into this modification.

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ONE-seq: epitranscriptome and gene-specific profiling of NAD-capped RNA

Project description:The hub metabolite, nicotinamide adenine dinucleotide (NAD), can be used as an initiating nucleotide in RNA synthesis to result in NAD-capped RNAs (NAD-RNA). Since NAD has been heightened as one of the most essential modulators in aging and various age-related diseases, its attachment to RNA might indicate a yet-to-be discovered mechanism that impacts adult life-course. However, the unknown identity of NAD-linked RNAs in adult and aging tissues has hindered functional studies. Here, we introduce ONE-seq method to identify the RNA transcripts that contain NAD cap. ONE-seq has been optimized to use only one-step chemo-enzymatic biotinylation, followed by streptavidin capture and the nudix phosphohydrolase NudC-catalyzed elution, to specifically recover NAD-capped RNAs for epitranscriptome and gene-specific analyses. Our data describes more than a thousand of previously unknown NAD-RNAs in the mouse liver and reveals epitranscriptome-wide dynamics of NAD-RNAs with age.ONE-seq empowers the identification of NAD-capped RNAs that are responsive to distinct physiological states, facilitating functional investigation into this modification.

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NAD tagSeq, a new method for transcriptome-wide identification and quantification of NAD+-capped RNAs, revealed that NAD+-capped RNAs are produced from a large number of protein-coding genes in Arabidopsis

Project description:The 5’ end of a eukaryotic mRNA generally has a methyl guanosine cap (m7G cap) that not only protects the mRNA from degradation but also mediates almost all other aspects of gene expression. Some RNAs in E. coli, yeast, and mammals were recently found to contain an NAD+ cap at their 5’ ends. Here we report development of a new method – NAD tagSeq – for transcriptome-wide identification and quantification of NAD+-capped RNAs (NAD-RNAs). The method uses first an enzymatic reaction and then a click chemistry reaction to label NAD-RNAs with a synthetic RNA tag. The tagged RNA molecules can be enriched and directly sequenced using the Oxford Nanopore sequencing technology. NAD tagSeq not only allows more accurate identification and quantification of NAD-RNAs but can also reveal sequences of whole NAD-RNA transcripts. Using NAD tagSeq, we found that NAD-RNAs in Arabidopsis are mostly produced from a few thousand protein-coding genes, with over 60% of them from fewer than 200 genes. The top 2,000 genes that were found to produce the highest numbers of NAD-RNAs were enriched in the gene ontology terms of responses to oxidative stress and other stresses, photosynthesis, and protein synthesis. For some Arabidopsis genes, over 10% of their transcripts could be NAD-capped. The NAD-RNAs in Arabidopsis have similar overall sequence structures to their canonical m7G-capped mRNAs. The identification and quantification of NAD-RNAs and revealing their sequence features provide essential steps toward understanding functions of NAD-RNAs.

2019-07-01 | GSE127755 | GEO

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